1. Department of Biological Sciences and Cell Differentiation and Development Center, Marshall University, Huntington, West Virginia 25755, Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado 80523-1870, School of Medicine, West Virginia University, Morgantown, West Virginia 26506-9100, Department of Biology, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, and CNRS, Institut de Biochimie et Biophysique Moléculaire et Cellulaire, Université...